title: Medulloblastoma: survival and late recurrence after the Collins' risk period.
abstract: Sixty-three patients with cerebellar medulloblastoma were treated between 1963 and 1992 at our institution. Among them, 10 patients have survived beyond the Collins' risk period. These included 6 males and 4 females who ranged in age from 6 months to 12 years at the time of diagnosis. A total removal of the tumor was achieved in 4 patients, while there was a subtotal removal in 3, and a partial removal in 3. Histologically, 6 tumors were classified as a classical type of medulloblastoma, and 4 were diagnosed as being a desmoplastic type. Postoperatively, 9 patients received craniospinal radiation therapy, and one received local radiation to the primary site. During the follow-up period of 3.9-25.4 years, 5 patients have been in continuous remission for from 14.2 to 25.4 years and are leading normal lives, 2 have survived for 18.1 and 18.5 years with mild to moderate neurological deficits, while the remaining 3 died after the Collins' risk period. Two out of these last 3 patients were under the age of one year at the time of onset, while the remaining one died after a second recurrence. We conclude that careful follow-up is needed for all long-term survivors even after the Collins' risk period, especially for those who were under the age of 1 year at onset and who failed in the initial treatments.
authors.affiliation: Department of Neurosurgery, Faculty of Medicine, Kyushu University, Fukuoka, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Nishio
authors.forename: T
authors.initials: T
authors.lastname: Morioka
authors.forename: I
authors.initials: I
authors.lastname: Takeshita
authors.forename: M
authors.initials: M
authors.lastname: Fukui
mesh_terms: D000293:Adolescent; D000328:Adult; D002528:Cerebellar Neoplasms / Q000401:mortality* / Q000473:pathology / Q000628:therapy; D002648:Child; D002675:Child, Preschool; D003131:Combined Modality Therapy; D018572:Disease-Free Survival; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D008297:Male; D008527:Medulloblastoma / Q000401:mortality* / Q000473:pathology / Q000628:therapy; D009364:Neoplasm Recurrence, Local; D011788:Quality of Life; D012306:Risk; D016019:Survival Analysis